I tried generating maps like that for FM but couldn't get the colors to map to signal strength the way I wanted. I would also be in for months and months of number crunching across multiple computers, as each one takes up to 20 minutes on my fastest computer, let alone my slower computers. To get the entire country's TV stations done in Longley-Rice on RabbitEars took 7 or 8 computers about 2 months, as I recall.
The contour maps I generate on RabbitEars, by comparison, take me about 30 seconds each.
- Trip